<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
  <style>
    div{
      width: 200px;
      height: 50px;
      border: 1px solid red;
      /*文本修饰:上划线/下划线/删除线/无*/
      text-decoration: overline;
      text-decoration: underline;
      text-decoration: line-through;
      text-decoration: none;
      /*水平对齐方式*/
      text-align: right;
      text-align: center;
      /*行高, 多行控制行间距, 单行可以控制垂直居中*/
      line-height: 50px;
      /*阴影:颜色 x偏移值 y偏移值 浓度*/
      text-shadow: red -5px -5px 5px;
      /*设置字体大小*/
      font-size: 25px;
      /*设置加粗*/
      font-weight: bold;
      /*设置斜体*/
      font-style: italic;
      /*设置字体*/
      font-family: cursive;
    }
    a{text-decoration: none}
    h3{
      font-weight: normal;/*去掉加粗*/
      /*设置字体大小和字体*/
      font: 50px cursive;
    }
  </style>
</head>
<body>
<h3>这是h3</h3>
<a href="">超链接</a>
<div>文本和字体相关</div>
</body>
</html>